Search found 4119 matches

by Andrew
Tue Sep 21, 2021 7:27 pm
Forum: Assorted Stuff
Topic: Owston 21 ???
Replies: 37
Views: 1448

Re: Owston 21 ???

I'd be up for it :!:
by Andrew
Mon Sep 20, 2021 6:44 pm
Forum: Everyones Projects
Topic: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
Replies: 1182
Views: 293111

Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)

malarkey1976 wrote: Mon Sep 20, 2021 4:54 pm Hello Andrew,

I would like to buy 2xsmall and 2xlarge boards. If you still have some available, could you send me a PM, please?

Thanks
Kai
No problems, are you ok waiting for a week, or two, Kai? I'll put them by for you.

Send me a PM for details :)
by Andrew
Fri Aug 13, 2021 9:10 am
Forum: Assorted Stuff
Topic: Landrovers...
Replies: 44
Views: 9530

Re: Landrovers...

Sweet :)
by Andrew
Wed Aug 11, 2021 8:49 pm
Forum: Everyones Projects
Topic: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
Replies: 1182
Views: 293111

Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)

Ray P wrote: Wed Aug 11, 2021 11:17 am Received some additional PCBs from Andrew today. They'll probably go into a Bartola 3A5 preamp.... ...one day!
Good news they made it ok :)
by Andrew
Mon Aug 09, 2021 7:19 am
Forum: Everyones Projects
Topic: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
Replies: 1182
Views: 293111

Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)

Yes, the buzz would most likely be the reg dropping out.
by Andrew
Sat Aug 07, 2021 9:19 am
Forum: Everyones Projects
Topic: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
Replies: 1182
Views: 293111

Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)

I don't know if you need the fans, Ali, just get a bit more ventilation and see what they run at.
by Andrew
Sat Aug 07, 2021 8:16 am
Forum: Everyones Projects
Topic: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
Replies: 1182
Views: 293111

Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)

I don't know if you need the fans, Ali, just get a bit more ventilation and see what they run at.
by Andrew
Fri Aug 06, 2021 2:35 pm
Forum: Everyones Projects
Topic: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
Replies: 1182
Views: 293111

Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)

It's ironic, I have never put them in a finished and cased up amp to find out what happens to them. I have a load of unfinished projects here :roll: I put some prototypes in one of Colin's amps, the aftermarket fitment resulted in the regs being "on their sides", we eventually swapped them...
by Andrew
Thu Aug 05, 2021 9:31 pm
Forum: Everyones Projects
Topic: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
Replies: 1182
Views: 293111

Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)

It's difficult to design for every eventuality, and I have seen heat damage to some of the PCBs in hot chassis, but I haven't yet had reports of dead regs. Some of these must be close to 9 years of service, I don't think I'd disappointed with that, nothing lasts for ever.
by Andrew
Tue Aug 03, 2021 7:22 am
Forum: News
Topic: eggborough
Replies: 5
Views: 523

Re: eggborough

That first meet at Eggborough social club seems like yesterday :(
by Andrew
Wed Jul 28, 2021 8:41 pm
Forum: News
Topic: Dusty Hill
Replies: 6
Views: 581

Re: Dusty Hill

:(
by Andrew
Mon Jul 26, 2021 10:21 pm
Forum: Everyones Projects
Topic: 300B Headphone Amp
Replies: 110
Views: 30669

Re: 300B Headphone Amp

Nick wrote: Mon Jul 26, 2021 9:25 pm The ideal solution is to wind extra turns on the toroid to add or subtract voltage. but I seem to remember you have them with a filled centre.
That's a good point, Nick. I'd forgotten about that little trick.
by Andrew
Mon Jul 26, 2021 11:31 am
Forum: Everyones Projects
Topic: 300B Headphone Amp
Replies: 110
Views: 30669

Re: 300B Headphone Amp

I tend to agree, not enough headroom, but worth trying, from memory you need 3v DC, at least.

If you try the resistor, I'd be tempted just to try the resistor in the "positive" leg of the transformer, first.
by Andrew
Sun Jul 18, 2021 9:21 pm
Forum: Everyones Projects
Topic: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
Replies: 1182
Views: 293111

Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)

Good to see you chaps are still having fun with these :)
by Andrew
Sun Jul 18, 2021 9:18 pm
Forum: News
Topic: Our friend Nick Baker
Replies: 25
Views: 2071

Re: Our friend Nick Baker

Sad news indeed, another "silent key" as the hams say. I saw Pepperoni and the rest of the "Bristol gang" at the last proper show I did with Nick, Dave and Ali before the pandemic hit :(

Best wishes to Nick's family.

Andrew